A MONSTER GUN PATENTED IN AMERICA. In view of the bombardment of Paris by the German longdistance gun, our readers will be interested in this picture, which shows a type of electro-magnetic gun for which a patent was granted by the United States Patent Office in 1915 to Professor Kristian Birkeland, a Swede. Through this gun a torrent of explosive shells on an endless belt could be thrown by the operation of electro-magnetic force. The gun could hurl nineteen-inch shells, each containing a high charge of explosives, to great distances. It would be noiseless and smokeless. The gun would be free from the wear and tear of cannon using explosives to charge the projectile from the barrel.

New Zealand Illustrated Sporting & Dramatic Review, Issue 1469, 20 June 1918, Page 26

A MONSTER GUN PATENTED IN AMERICA. In view of the bombardment of Paris by the German longdistance gun, our readers will be interested in this picture, which shows a type of electro-magnetic gun for which a patent was granted by the United States Patent Office in 1915 to Professor Kristian Birkeland, a Swede. Through this gun a torrent of explosive shells on an endless belt could be thrown by the operation of electro-magnetic force. The gun could hurl nineteen-inch shells, each containing a high charge of explosives, to great distances. It would be noiseless and smokeless. The gun would be free from the wear and tear of cannon using explosives to charge the projectile from the barrel.